BAGHDAD – An official in the disputed Iraqi city of Kirkuk says a powerful suicide car bomb has struck the local headquarters for the party of a major Kurdish leader, killing at least four and wounding dozens.

Kirkuk provincial council chairman Hassan Torhan says the car driven by a suicide bomber blew up outside the offices of the Kurdistan Democratic Party on Wednesday morning. The party is led by Massoud Barzani, the president of Iraq's largely autonomous Kurdish region.

Torhan says 90 people have been wounded, suggesting the death toll could rise.